The various words listed in the text (accordant, coherent, compatible, concordant, conformable, congruous, consistent, consonant, correspondent) all mean similar or in agreement with something else. They can be used to describe situations or ideas that are harmonious or suitable for a specific purpose or person. In geometry, congruent specifically refers to objects that are identical in shape and size. Overall, congruence refers to the quality or state in which things coincide or agree with each other.